Regeneron Pharmaceuticals

REGN on Nasdaq. Regeneron Pharmaceuticals sells prescription medicines to patients and doctors. Market value $54.8bn.

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Price checks use the past 12 months to June 2026. Quality checks use five annual reports, the latest for the year to December 2025.

Should I look at this?

Worth a closer look

Read what could go wrong

This is not advice. Check the numbers below.

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Cash yield
past 12 months to June 2026
4.7%fair

For every $100 of what the whole company costs, it produced $4.69 of spare cash in the past 12 months. A savings account pays about $4.

Price to profit
past 12 months to June 2026
20.9×full

You pay 20.9 years of operating profit for the business. The average large US company costs around 18.

Return on capital
five annual reports to December 2025
12.3%five-year median

Each dollar kept in the business earns 12 cents a year. Above 10 is good.

Quality score: 96 of 100. Price score: 72 of 100. Our list needs 70 on quality and 60 on price.

$738.72 a share, 37% above its 1-year low

Over the past year the price has ranged from $541.00 to $859.34.

Dividend: 0.5% a year

Paid in its latest year

Prices from Tuesday’s close (6 October).

Five years of cash, in billions

6.5
4.4
3.9
3.7
4.1
3.8
2021202220232024202512 monthsto Jun '26
Revenue
$16.1bn$12.2bn$13.1bn$14.2bn$14.3bn
Operating margin
55.7%38.9%30.9%28.1%24.9%
Debt to equity
0.140.120.100.090.09
Shares outstanding
0.11bn0.11bn0.11bn0.12bn0.11bn

Health checks

  • Free cash flow positive5 of 5 years
  • Accounting looks honest (Beneish)Not enough data
  • Financial strength (Piotroski)4 of 7 checks we could run
  • Profit backed by cash (accruals)Yes
  • Debt0.09× equity
  • Revenue growth, five yearsStrong, 11.0% a year
  • Buying back its own sharesYes, 3% fewer since 2021

The quarter to June 2026

How the business did, compared with the same quarter a year earlier.

  • Sales: $4.3 billion last quarter, up 17% on a year ago.
  • Profit: $1.3 billion, down 7% on a year ago.
  • It keeps 25 cents of each $1 of sales as operating profit, down from 27 cents a year earlier.
  • Spare cash over the past 12 months: $3.8 billion, down from $3.9 billion.
  • 2% fewer shares than a year ago. Each share owns a bit more of the company.
  • Debt is $251 million more than cash, down from $709 million a year ago.
  • Sales grew on a year ago in each of the last 4 quarters.
Sales by quarter
Sales by quarter
Quarter toAmount
September 2024$3.7bn
December 2024$3.8bn
March 2025$3.0bn
June 2025$3.7bn
September 2025$3.8bn
December 2025$3.9bn
March 2026$3.6bn
June 2026$4.3bn
Profit by quarter
Profit by quarter
Quarter toAmount
September 2024$1.3bn
December 2024$918m
March 2025$809m
June 2025$1.4bn
September 2025$1.5bn
December 2025$845m
March 2026$727m
June 2026$1.3bn

From the company's quarterly reports to the SEC.

Dates

Next results (estimated)
28 October 2026
Last annual report (10-K)
4 February 2026
Next quarterly (estimated, 10-Q)
29 October 2026

Who owns it

10 long-term investors we follow own it, unchanged from 10 last quarter. 1,332 funds in all.

Jun '25
Dec '25
Jun '26
Largest holders overall

From 13F filings for the quarter ended 30 June 2026.

Big holders and activists

2 investors own more than 5%.

From Schedule 13D and 13G filings: anyone owning more than 5% must file one.

What insiders did

No insider bought shares on the open market in the last 12 months. 7 sold $13m, $8m of it under preset trading plans.

  • McCourt Marion
    EVP Commercial
    Sold
    under a preset trading plan
    Date
    3 September 2026
    Shares
    1,131
    Price
    $857.39
    Value
    $969,708
  • Guarini Kathryn
    Director
    Sold
    under a preset trading plan
    Date
    2 September 2026
    Shares
    400
    Price
    $850.00
    Value
    $340,000
  • McCourt Marion
    EVP Commercial
    Sold
    under a preset trading plan
    Date
    2 September 2026
    Shares
    1,215
    Price
    $850.00
    Value
    $1m
  • Guarini Kathryn
    Director
    Sold
    under a preset trading plan
    Date
    10 August 2026
    Shares
    400
    Price
    $800.00
    Value
    $320,000
  • Zoghbi Huda Y
    Director
    Sold
    under a preset trading plan
    Date
    10 August 2026
    Shares
    800
    Price
    $800.00
    Value
    $640,000
  • RYAN ARTHUR F
    Director
    Sold
    under a preset trading plan
    Date
    2 July 2026
    Shares
    200
    Price
    $650.15
    Value
    $130,030
  • RYAN ARTHUR F
    Director
    Sold
    under a preset trading plan
    Date
    1 May 2026
    Shares
    100
    Price
    $705.24
    Value
    $70,524
  • RYAN ARTHUR F
    Director
    Sold
    under a preset trading plan
    Date
    1 April 2026
    Shares
    100
    Price
    $777.27
    Value
    $77,727
  • RYAN ARTHUR F
    Director
    Sold
    under a preset trading plan
    Date
    2 March 2026
    Shares
    100
    Price
    $785.50
    Value
    $78,550
  • Zoghbi Huda Y
    Director
    Sold
    under a preset trading plan
    Date
    19 February 2026
    Shares
    1,638
    Price
    $781.33
    Value
    $1m

From Form 4 filings: insiders must report trades in their own company's shares within two days.

Warning signs in its filings

Problems the company itself reported to the SEC, in its own words.

None of the warning signs we check for were found.

We look for five warning signs: doubt it can keep going, weak checks on its own accounts, a notice that its past accounts can't be relied on, a change of auditor, and one customer bringing in a big share of sales. We don't check lawsuits, investigations or debt yet.

We checked the auditor's report, internal controls, restatement notices, auditor changes and big customers in the 10-K filed 4 Feb 2026, plus the 10-Q filed 30 Jul 2026 and 6 later 8-Ks.

A 10-K is the yearly report every US company files with the SEC. An 8-K is a short notice of a big event.

What could go wrong

Cheap for a reason is the question the numbers cannot answer.

Whether the price already reflects the risks is what the deep dive is for.

What changed in the risks this year

Companies must list what could hurt them each year. These are the parts that changed since last year’s report.

  • We face risks associated with tariffs and other trade restrictions, which may have a material adverse impact on our results of operations and financial condition.

    Could happen
    The United States has recently imposed significant tariffs on imports from other countries, including a baseline tariff of 10% on imports into the United States and higher tariffs on multiple designated countries, such as "reciprocal" tariffs at varying rates. Such tariffs have prompted retaliatory measures from several countries, which may further escalate. Certain of these tariffs have been subsequently paused or modified, and the situation remains fluid. While pharmaceutical products are currently excluded from the baseline and "reciprocal" tariffs imposed by the United States, such tariffs still apply to the raw materials and other products necessary for the manufacture and formulation of our marketed products and product candidates. In addition, the U.S. Department of Commerce has initiated an investigation under Section 232 of the Trade Expansion Act of 1962, as amended, to determine the effects of importing pharmaceuticals and pharmaceutical ingredients on national security. This investigation may lead to the imposition of tariffs on pharmaceutical imports, consistent with the current U.S. administration's stated policy objective of reshoring pharmaceutical manufacturing to the United States. Further, in July 2025, the United States and the EU announced the framework of a trade agreement that generally imposes a 15% tariff on imports from the EU. Under this agreement, pharmaceutical products would not be subject to any future Section 232 investigation duties in excess of this 15% rate. The U.S. Supreme Court is currently considering legal challenges to tariffs imposed under the International Emergency Economic Powers Act, such as the baseline and reciprocal tariffs discussed above. The outcome of this decision could impact trade agreements entered into by the United States and the wider tariff environment in which we operate.
    Read more
  • We face risks associated with tariffs and other trade restrictions, which may have a material adverse impact on our results of operations and financial condition.

    Could happen
    We face significant risks from the existing tariffs imposed by the United States (such as those discussed above) and potential new tariffs as well as their secondary effects, including other countries' imposition of retaliatory tariffs and non-tariff barriers. Depending on how the existing tariffs are applied and whether additional tariffs are imposed, our products that are manufactured partly or entirely outside of the United States could be subject to tariff duties when they are imported to the United States for further manufacturing, packaging, and/or sale to customers. In addition, like all U.S. importers, our Company could pay more for foreign-sourced inputs, which could adversely affect our operating costs in the United States. Our results of operations and financial condition may be materially adversely affected due to the impact of the foregoing.
    Read more
  • The commercial success of our products and product candidates is subject to significant competition.

    Could happen
    We face increasing competition from Chinese biotechnology and pharmaceutical companies, including Chinese state-owned or state-backed enterprises, with respect to both our marketed products and product candidates. China has become one of the world's leading developers of new drugs, and Chinese companies benefit from a regulatory regime that enables rapid, low-cost clinical trials that facilitate innovation. Furthermore, we compete with other large pharmaceutical companies, many of which have invested significantly in China, in acquiring or licensing Chinese product candidates, and we may not be as successful as our competitors in identifying or accessing such assets.
    Read more
  • Product reimbursement and coverage policies and practices, pricing regulations and requirements, and our pricing strategy could change due to various factors beyond our control, which may adversely impact our business, prospects, operating results, and financial condition.

    Could happen
    The full extent to which the policy changes described above will ultimately impact reimbursement levels of our marketed products, including those covered under Medicare Part B (such as EYLEA HD and EYLEA), or our product candidates that may be covered under Medicare Part B or Medicare Part D in the future, is currently unclear. In addition, the current U.S. administration is pursuing other measures to reduce the cost of drugs in the United States. For example, in May 2025, an executive order directed the U.S. Department of Health and Human Services ("HHS") and other federal agencies to take certain steps intended to, among other things, reduce the prices of drugs sold in the United States to match the lowest price available for the same drugs in comparably developed nations (commonly referred to as "most-favored-nation" ("MFN") pricing). In July 2025, as a follow-up to this executive order, President Trump sent a letter to several pharmaceutical companies (including Regeneron) requesting that within the next 60 days they, among other matters, provide their existing drugs at MFN rates to Medicaid patients, guarantee MFN pricing for newly launched drugs, and provide for direct-to-consumer and direct-to-business distribution models for high-volume, high-rebate prescription drugs. In addition, a prior executive order from April 2025 directed the HHS to take appropriate steps to, among other things, modify certain provisions of the Medicare Drug Price Negotiation Program, develop and implement a payment model to reduce the price of high-cost prescription drugs and biological products covered by Medicare, accelerate approval of generic and biosimilar products, and facilitate the ability of states to import pharmaceuticals from other countries. In response to these executive orders, in December 2025, the Center for Medicare and Medicaid Innovation proposed two mandatory Medicare payment models that, if enacted into law, would apply to certain drugs covered under Medicare Parts B and D and test whether alternative methodologies for calculating inflationary rebates based on international reference pricing would reduce Medicare spending. It is currently unclear how and to what extent the measures described in this paragraph may be implemented and what impact any such implementation would have on our Company.
    Read more
  • Sales of our marketed products are dependent on the availability and extent of coverage and reimbursement and copay assistance from third-party payors and other third parties.

    Already happened
    Our revenues and profitability will be materially adversely affected if such third-party payors and other third parties do not adequately defray or reimburse the cost of our marketed products. If third-party payors do not provide coverage and reimbursement with respect to our marketed products or provide an insufficient level of coverage and reimbursement, such products may be too costly for many patients to afford them, and physicians may not prescribe them. Many third-party payors cover only selected drugs, or may prefer selected drugs, making drugs that are not covered or preferred by such payors more expensive for patients. Third-party payors may also require prior authorization for reimbursement, require failure on another type of treatment, or impose other utilization management restrictions before covering a particular drug, particularly with respect to higher-priced drugs. Further, sales of our marketed products (such as EYLEA HD and EYLEA) in the United States may be adversely impacted by the lack of sufficient copay assistance from not-for-profit patient assistance funds. For example, a loss in market share to compounded bevacizumab due to patient affordability constraints impacted U.S. net product sales of EYLEA for the year ended December 31, 2025, as further described under Part II, Item 7. "Management's Discussion and Analysis of Financial Condition and Results of Operations – Results of Operations." If independent not-for-profit patient assistance funds that provide patient copay assistance are unable to support eligible patients, this will likely have a continued negative impact on patient affordability resulting in lower utilization of higher-cost anti-VEGF agents.
    Read more

Read it in the annual report

The deep dive

Everything above is arithmetic on public filings. The deep dive reads the last ten years of annual reports, the proxy statements, and the earnings calls, then argues the case the way Buffett, Klarman, and Hohn would, and checks every claim against the source.

  • What the business is worth, as a range, and the margin of safety at today’s price
  • Prices to start buying, buy, and buy hard
  • The three things that would make this a mistake
  • Every number footnoted to the filing it came from
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Not advice. Numbers on this page come from SEC filings and are updated each night; prices are updated again after the US market closes. The five-year figures are rounded.